Every year, a sparkling cave is sculpted in the icy heart of a glacier.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Lake Phewa is home to the only island temple in Nepal.

A coastal French town said to have been visited by Jesus' disciples is a major pilgrimage center for Catholic Romanis.

A never-finished memorial to the heroes of the Napoleonic War has become "Scotland's Folly."

Visit the remains of a notorious Victorian-era correctional facility.

In the middle of a Brussels roundabout, a cargo container balancing on its edge.

The world's northernmost aquarium looks like it has fallen over.

The world's most charming instant portrait studio also happens to be its smallest.

The great polar explorer is remembered in this far northern town, where he embarked on his final expedition.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

A fortified palace in the shape of a ship on the Thiou river.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

An architectural oddity where the triglyphs of the courtyard of walls create an optical illusion.

A young Italian couple has been locked in an embrace for over 6,000 years.

A small villa said to have inspired the design of the court jester at the heart of Giuseppe Verdi's 1851 opera.

A medieval tower with a suspended iron cage used as an open-air jail for criminals who were exposed as a warning.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

The oldest church in Mantua was buried for centuries under the facades of other structures.

The "floating factory" was a highlight in the career of the Italian architect known for his unusual use of reinforced concrete.

A floating bridge leaning on barges allows pedestrians to reach the historical center.

Did he come up with a theory of cosmic-ray showers while sitting in this bath?

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.